Change 'since' version to 3.4.6 (#9492)

backporting[bot] · 3nids · commit 1f95ab675d3b · 2019-03-12T12:06:38.000+01:00
diff --git a/python/gui/auto_generated/qgsfieldexpressionwidget.sip.in b/python/gui/auto_generated/qgsfieldexpressionwidget.sip.in
@@ -63,7 +63,7 @@ Sets whether an optional empty field ("not set") option is shown in the combo bo
 
 .. seealso:: :py:func:`allowEmptyFieldName`
 
-.. versionadded:: 3.6
+.. versionadded:: 3.4.6
 %End
 
     bool allowEmptyFieldName() const;
@@ -72,7 +72,7 @@ Returns true if the combo box allows the empty field ("not set") choice.
 
 .. seealso:: :py:func:`setAllowEmptyFieldName`
 
-.. versionadded:: 3.6
+.. versionadded:: 3.4.6
 %End
 
     void setLeftHandButtonStyle( bool isLeft );
diff --git a/src/gui/qgsfieldexpressionwidget.h b/src/gui/qgsfieldexpressionwidget.h
@@ -79,14 +79,14 @@ class GUI_EXPORT QgsFieldExpressionWidget : public QWidget
     /**
      * Sets whether an optional empty field ("not set") option is shown in the combo box.
      * \see allowEmptyFieldName()
-     * \since QGIS 3.6
+     * \since QGIS 3.4.6
      */
     void setAllowEmptyFieldName( bool allowEmpty );
 
     /**
      * Returns true if the combo box allows the empty field ("not set") choice.
      * \see setAllowEmptyFieldName()
-     * \since QGIS 3.6
+     * \since QGIS 3.4.6
      */
     bool allowEmptyFieldName() const;
 
